C# 分页方法

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;

namespace System.Web.Mvc //注意修改为与HtmlHelper相同的命名空间
{
/// <summary>
/// 静态 分页方法
/// </summary>
public static class MyHtmlHelper
{

	
             	//HtmlHelper的扩展：
		//注意点：扩展方法必须是静态方法，所在的类必须是静态类，所在的命名空间改成System.Web.MVC则能省略页面中必须添加命名空间的约束。
		//主要就是输出分页的超级链接的标签
		//自定义分页Helper扩展
		public static HtmlString ShowPageNavigate(this HtmlHelper htmlHelper, int currentPage, int pageSize, int totalCount)
        {
            var redirectTo = htmlHelper.ViewContext.RequestContext.HttpContext.Request.Url.AbsolutePath;
            pageSize = pageSize == 0 ? 3 : pageSize;
            var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数
            var output = new StringBuilder();
            if (totalPages > 1)
            {
                //if (currentPage != 1)
                {//处理首页连接
                    output.AppendFormat("<a class=‘pageLink‘ href=‘{0}?pageIndex=1&pageSize={1}‘>首页</a> ", redirectTo, pageSize);
                }
                if (currentPage > 1)
                {//处理上一页的连接
                    output.AppendFormat("<a class=‘pageLink‘ href=‘{0}?pageIndex={1}&pageSize={2}‘>上一页</a> ", redirectTo, currentPage - 1, pageSize);
                }
                else
                {
                   // output.Append("<span class=‘pageLink‘>上一页</span>");
                }

                output.Append(" ");
                int currint = 5;
                for (int i = 0; i <= 10; i++)
                {//一共最多显示10个页码，前面5个，后面5个
                    if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
                    {
                        if (currint == i)
                        {//当前页处理
                            //output.Append(string.Format("[{0}]", currentPage));
                            output.AppendFormat("<a class=‘cpb‘ href=‘{0}?pageIndex={1}&pageSize={2}‘>{3}</a> ", redirectTo, currentPage , pageSize, currentPage );
                        }
                        else
                        {//一般页处理
                            output.AppendFormat("<a class=‘pageLink‘ href=‘{0}?pageIndex={1}&pageSize={2}‘>{3}</a> ", redirectTo, currentPage + i - currint, pageSize, currentPage + i - currint);
                        }
                    }
                    output.Append(" ");
                }
                if (currentPage < totalPages)
                {//处理下一页的链接
                    output.AppendFormat("<a class=‘pageLink‘ href=‘{0}?pageIndex={1}&pageSize={2}‘>下一页</a> ", redirectTo, currentPage + 1, pageSize);
                }
                else
                {
                    //output.Append("<span class=‘pageLink‘>下一页</span>");
                }
                output.Append(" ");
                if (currentPage != totalPages)
                {
                    output.AppendFormat("<a class=‘pageLink‘ href=‘{0}?pageIndex={1}&pageSize={2}‘>末页</a> ", redirectTo, totalPages, pageSize);
                }
                output.Append(" ");
            }
            output.AppendFormat("第{0}页 / 共{1}页", currentPage, totalPages);//这个统计加不加都行

            return new HtmlString(output.ToString());
        }
		
}

}

   
         // GET: Users
        /// <summary>
        /// 列表页
        /// </summary>
        /// <param name="pageIndex">起始页</param>
        /// <param name="pageSize">一页大小</param>
        /// <returns></returns>
        public ActionResult Index(int pageIndex=1,int pageSize=5)
        {
            //  ViewData.Model = dbContext.Users.AsEnumerable();
            // int pagSize=int.Parse(Request["pageSize"]??"2"); 

            // EF中使用Link分页查询语句
            ViewData["pageIndex"] = pageIndex;
            ViewData["pageSize"] = pageSize;
            ViewData["total"] = dbContext.Users.Count(); //获取总行数
            ViewData.Model = dbContext.Users
                            .OrderBy(u => u.Id) //根据id排序
                            .Skip(pageSize * (pageIndex - 1)) //跳过多少行
                            .Take(pageSize)  //取多少行
                            .AsEnumerable(); //延迟加载，当真正使用（数据）时才执行sql语句。


            return View();
        }

@model IEnumerable<FindGirl_UI.Models.Users>

@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <style type="text/css">
        /*分页样式：*/
		body
        {
        }

        .paginator
        {
            font: 12px Arial, Helvetica, sans-serif;
            padding: 10px 20px 10px 0;
            margin: 0px;
        }

        .paginator a
        {
            border: solid 1px #ccc;
            color: #0063dc;
            cursor: pointer;
            text-decoration: none;
        }

        .paginator a:visited
        {
            padding: 1px 6px;
            border: solid 1px #ddd;
            background: #fff;
            text-decoration: none;
        }

        .paginator .cpb
        {
            border: 1px solid #F50;
            font-weight: 700;
            color: #F50;
            background-color: #ffeee5;
        }

        .paginator a:hover
        {
            border: solid 1px #F50;
            color: #f60;
            text-decoration: none;
        }

        .paginator a, .paginator a:visited, .paginator .cpb, .paginator a:hover
        {
            float: left;
            height: 16px;
            line-height: 16px;
            min-width: 10px;
            _width: 10px;
            margin-right: 5px;
            text-align: center;
            white-space: nowrap;
            font-size: 12px;
            font-family: Arial,SimSun;
            padding: 0 3px;
        }
    </style>
</head>
<body>
    <p>
        @Html.ActionLink("Create New", "Create")
    </p>
    <table class="table">
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.Id)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Name)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Sex)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Age)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.City)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Character)
            </th>
            <th></th>
        </tr>
    
    @foreach (var item in Model) {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.Id)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Name)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Sex)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Age)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.City)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Character)
            </td>
            <td>
                @Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
                @Html.ActionLink("Details", "Details", new { id=item.Id }) |
                @Html.ActionLink("Delete", "Delete", new { id=item.Id })
            </td>
        </tr>
    }
    
    </table>

    @*分页部分*@
   <div id="pageNav">
       @Html.ShowPageNavigate((int)ViewData["pageIndex"],(int)ViewData["pageSize"],(int)ViewData["total"])
   </div>
</body>
</html>